18420304

素因数分解:

$2^4\times 7^1\times {\mathrm{163}}^1\times {\mathrm{1009}}^1$

素因数の和:1187

約数の個数: 40

約数和(自身を含む): 41078720

約数和(自身を除く): 22658416

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 163, 326, 652, 1009, 1141, 1304, 2018, 2282, 2608, 4036, 4564, 7063, 8072, 9128, 14126, 16144, 18256, 28252, 56504, 113008, 164467, 328934, 657868, 1151269, 1315736, 2302538, 2631472, 4605076, 9210152, 18420304]

約数ペア:

[(1, 18420304), (2, 9210152), (4, 4605076), (7, 2631472), (8, 2302538), (14, 1315736), (16, 1151269), (28, 657868), (56, 328934), (112, 164467), (163, 113008), (326, 56504), (652, 28252), (1009, 18256), (1141, 16144), (1304, 14126), (2018, 9128), (2282, 8072), (2608, 7063), (4036, 4564)]